Infrared quantitative detector for sulfur hexafluoride

Abstract

The utility model provides a sulfur hexafluoride infrared quantitative detector which comprises a machine body with a handheld part, a control processor, a sulfur hexafluoride infrared detection sensor, a pump body and a quantitative analysis chamber are arranged in the machine body, an air inlet is formed in the top of the machine body, a tubular air inlet rod is installed on the air inlet, the air inlet is communicated with the quantitative analysis chamber, and the pump body is communicated with the quantitative analysis chamber. The gas inlet end of the pump body is communicated with the quantitative analysis chamber, the gas outlet end of the pump body is communicated with the gas outlet grating on the machine body shell, the sulfur hexafluoride infrared detection sensor is arranged in the quantitative analysis chamber, and the front side of the machine body is provided with a display screen and function keys. The function keys, the display screen, the sulfur hexafluoride infrared detection sensor and the pump body are all electrically connected with the control processor. External air is pumped into the quantitative analysis chamber through the pump body, the concentration of sulfur hexafluoride is analyzed according to the infrared spectrum detection principle of the sulfur hexafluoride infrared detection sensor, and the device has the advantages of being high in precision and small in error value.

Description

Technical Field

[0001] The utility model relates to a sulfur hexafluoride infrared quantitative detector.

Background Art

[0002] Sulfur hexafluoride gas is widely used in the power system and has almost become the only insulating and arc-extinguishing medium used in medium-voltage, high-voltage and extra-high-voltage electrical equipment. Sulfur hexafluoride gas is an inert gas that is colorless, odorless, tasteless, non-toxic, and denser than air, and is not easily mixed with air. Pure sulfur hexafluoride is not toxic to the human body but cannot sustain life. Sulfur hexafluoride is a simple asphyxiant. Exposure to an atmosphere with an O2 content less than 19.5% will cause dizziness, coma, increased saliva, slow reaction, nausea, vomiting, loss of consciousness and even death. Exposure to an atmosphere with O2 less than 12% will cause unconsciousness without any warning and loss of the ability to self-rescue. Therefore, sulfur hexafluoride gas monitoring devices are installed near power equipment, and monitoring hosts, alarms, etc. are also installed at the entrance to the power equipment area to fully remind personnel entering the equipment area whether there is sulfur hexafluoride gas leakage and whether the oxygen content is sufficient in the current environment.

[0003] However, for the convenience of daily use and to meet the need to be carried outdoors, a handheld sulfur hexafluoride detector has emerged on the market at present. It has the advantages of being easy to carry and detect, but the detection method adopted is the high-voltage measurement method, which has the disadvantages of large data errors and low sensitivity of the device response.

Content of the Utility Model

[0004] The purpose of the utility model is to overcome the above problems. We provide a sulfur hexafluoride infrared quantitative detector, which has the advantages of high sensitivity, convenient use, and accurate data.

[0005] To achieve the above purpose, we provide a sulfur hexafluoride infrared quantitative detector, which includes a body with a handheld part. A control processor, a sulfur hexafluoride infrared detection sensor, a pump body, and a quantitative analysis chamber are arranged inside the body. An air inlet is arranged at the top position of the body, and a tubular air inlet rod is installed on the air inlet. The air inlet is communicated with the quantitative analysis chamber. The air inlet end of the pump body is communicated with the quantitative analysis chamber, and the air outlet end of the pump body is communicated with an air outlet grille on the body shell. The sulfur hexafluoride infrared detection sensor is arranged in the quantitative analysis chamber. A display screen and function keys are arranged on the front of the body. The function keys, the display screen, the sulfur hexafluoride infrared detection sensor, and the pump body are all electrically connected to the control processor.

[0006] In one or more embodiments, the air inlet is provided with an external thread structure, and the connection head of the air inlet rod is provided with an internal thread structure that is cooperatively connected with the external thread structure. An anti-slip structure is arranged on the outer periphery of the connection head.

[0007] In one or more embodiments, a built-in cavity is provided on the back surface of the body. The built-in cavity is opened or closed by a cover plate, and the built-in cavity can accommodate an intake rod.

[0008] In one or more embodiments, a sealing cover is provided on one side of the air inlet at the top of the body. The sealing cover is connected to the body by a flexible band, and the sealing cover can be covered on the air inlet.

[0009] In one or more embodiments, a solenoid valve is connected to the output end of the pump body, and the outlet of the solenoid valve is connected to the air outlet grille.

[0010] In one or more embodiments, a rechargeable battery is built in the body, and a charging socket is provided at the bottom of the body. The rechargeable battery, the charging socket and the control processor are electrically connected.

[0011] Compared with the background technology, the utility model has the following technical effects: The external air is pumped into the quantitative analysis chamber by the pump body, and the concentration of sulfur hexafluoride is analyzed by using the infrared spectrum detection principle of the sulfur hexafluoride infrared detection sensor, which has the advantages of high precision and small error value.

Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the front of the detector in the embodiment of the utility model;

[0013] Figure 2 It is a schematic structural diagram of the back of the detector in the embodiment of the utility model;

[0014] Figure 3 It is a schematic internal structural diagram of the detector in the embodiment of the utility model.

Detailed Embodiments

[0015] In order to deepen the understanding of the utility model, the utility model will be further described in detail below in combination with the embodiments and the drawings. The embodiments are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model.

[0016] Please refer to Figures 1-3, this application provides a sulfur hexafluoride infrared quantitative detector, which includes a body 1 with a handheld part. Inside the body, there are a control processor 2, a sulfur hexafluoride infrared detection sensor 3, a pump body 4, and a quantitative analysis chamber 5. An air inlet 6 is provided at the top of the body, and a tubular air inlet rod 7 is installed on the air inlet. The air inlet is communicated with the quantitative analysis chamber 5. The air inlet end of the pump body is communicated with the quantitative analysis chamber, and the air outlet end of the pump body 4 is communicated with an air outlet grille 8 on the outer shell of the body 1. The sulfur hexafluoride infrared detection sensor 3 is arranged in the quantitative analysis chamber 5. A display screen 9 and function keys 10 are provided on the front of the body. The function keys, the display screen, the sulfur hexafluoride infrared detection sensor, and the pump body are all electrically connected to the control processor. By operating the pump body, the outside air is drawn into the quantitative analysis chamber from the air inlet rod, and then the sulfur hexafluoride content in the air is detected by the sulfur hexafluoride infrared detection sensor, and the detection signal is transmitted to the control processor. The control processor amplifies and calculates the result of the detection signal and presents the detection result in a visual form through the display screen. After each use, the pump body discharges the gas in the quantitative analysis chamber.

[0017] The air inlet 6 is provided with an external thread structure, and the connecting head of the air inlet rod 7 is provided with an internal thread structure that cooperates with the external thread structure. An anti-slip structure 11 is provided on the outer periphery of the connecting head. When the user does not use the detector, the air inlet rod can be detached for storage.

[0018] There is a built-in cavity on the back of the body 1, and the built-in cavity is opened or closed through a cover plate 12. The built-in cavity can accommodate the air inlet rod 7. Placing the air inlet rod in the built-in cavity can prevent the air inlet rod from being lost and enable the air inlet rod to be immediately installed when using the detector.

[0019] A sealing cover 13 is provided on one side of the air inlet at the top of the body 1. The sealing cover is connected to the body through a flexible belt 14. The sealing cover can cover the air inlet 6. When the user does not use the detector, the air inlet is blocked by the sealing cover to prevent dust and water, which has a protective effect on the sulfur hexafluoride infrared detection sensor.

[0020] A solenoid valve 15 is connected to the output end of the pump body 4. The outlet of the solenoid valve is connected to the air outlet grille 8. The opening of the solenoid valve is synchronized with the pump body. When the detector is not in use, the solenoid valve closes the air passage to prevent dust and water.

[0021] The body 1 is internally provided with a rechargeable battery 16, and a charging socket is provided at the bottom of the body. The rechargeable battery and the charging socket are electrically connected to the control processor, so as to facilitate the user to carry the detector outdoors after charging.

[0022] The above is the preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiment. Any equivalent modification or change made by those of ordinary skill in the art according to the disclosure of the present utility model shall be included in the protection scope recorded in the claims.

Claims

1. A sulfur hexafluoride infrared quantitative detector, characterized in that: The invention comprises a body (1) having a handheld portion, wherein a control processor (2), a sulfur hexafluoride infrared detection sensor (3), a pump body (4) and a quantitative analysis chamber (5) are arranged in the body, an air inlet (6) is arranged at the top of the body, a tubular air inlet rod (7) is installed on the air inlet, the air inlet is communicated with the quantitative analysis chamber (5), the air inlet end of the pump body is communicated with the quantitative analysis chamber, the air outlet end of the pump body (4) is communicated with an air outlet grille (8) on the outer shell of the body (1), the sulfur hexafluoride infrared detection sensor (3) is arranged in the quantitative analysis chamber (5), a display screen (9) and function buttons (10) are arranged on the front of the body, and the function buttons, display screen, sulfur hexafluoride infrared detection sensor and pump body are all electrically connected to the control processor.

2. The sulfur hexafluoride infrared quantitative detector according to claim 1, characterized in that: The air inlet (6) is provided with an external thread structure, the connecting head of the air inlet rod (7) is provided with an internal thread structure that cooperates with the external thread structure, and the outer periphery of the connecting head is provided with an anti-slip structure (11).

3. The infrared quantitative detector for sulfur hexafluoride according to claim 2, characterized in that: An inner cavity is provided on the back of the machine body (1), and the inner cavity is opened or closed by a cover plate (12). The inner cavity can accommodate an air intake rod (7).

4. The infrared quantitative detector for sulfur hexafluoride according to claim 2, characterized in that: A sealing cover (13) is provided on the top of the machine body (1) at one side of the air inlet. The sealing cover is connected to the machine body via a flexible belt (14). The sealing cover can be covered on the air inlet (6).

5. The sulfur hexafluoride infrared quantitative detector according to claim 1, characterized in that: The output end of the pump body (4) is connected to a solenoid valve (15), and the outlet of the solenoid valve is connected to the air outlet grille (8).

6. The sulfur hexafluoride infrared quantitative detector according to claim 1, characterized in that: The body (1) has a built-in rechargeable battery (16), and a charging socket is provided at the bottom of the body. The rechargeable battery and the charging socket are electrically connected to the control processor.

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